package classwork;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

public class Server {
    private ServerSocket serverSocket;

    public Server() {
        try {
            System.out.println("启动服务器...");
            serverSocket = new ServerSocket(8777);
            System.out.println("服务器启动完毕");
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public void start(){
        try {
            while (true) {
                System.out.println("等待客户端连接中...");
                Socket socket = serverSocket.accept();
                System.out.println("有一个客户端连接成功");
                Runnable handler = new ClientHandler(socket);
                Thread t = new Thread(handler);
                t.start();
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args) {
        Server server = new Server();
        server.start();
    }
    private class ClientHandler implements Runnable{
        private Socket socket;
        private String host;
        ClientHandler(Socket socket){
            this.socket = socket;
            host = socket.getInetAddress().getHostAddress();
        }
        public void run(){
            try {
                InputStream is = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(is, StandardCharsets.UTF_8);
                BufferedReader br = new BufferedReader(isr);
                String message;
                while ((message = br.readLine())!=null){
                    System.out.println(host+":"+message);
                };
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
    }
}
